SELECT MIN(price) AS lowest_price FROM products; 
-- Output:
lowest_price
------------
    $9.99

SELECT MIN(order_date) AS first_order FROM orders; 
-- Output:
first_order
-----------------
2023-01-15 08:30:22

SELECT product_id, MIN(rating) AS lowest_rating FROM reviews GROUP BY product_id;
-- Output:
product_id    product_name      lowest_rating
----------    -------------     -------------
P100          Coffee Maker           2.0
P101          Headphones            1.5
P102          Phone Charger         3.0
P103          Laptop Stand          2.5
P104          Mouse Pad             3.5